Seven hundred and fifty women using IUD (TCu 200) were observed for one year after insertion.
During the observation year, 16 (2.1 per cent) of the 750 women studied were hospitalized for salpingitis. The diagnosis was confirmed by laparoscopy.
Every patient except one had salpingitis bilaterally and none of them had positive culture for gonorrhea at the time of hospitalization. It was noteworthy that only 7 of the patients had palpable adnexal masses. Of the 16 women, 8 belonged to the nulliparous group (3.8 per cent) and 8 to the parous group (1.5 per cent). The high risk age group for salpingitis was 16 to 25 years. The risk of developing salpingitis is greater during the first month after insertion (5 in the nulliparous group and 4 in the parous group). In only one case were leukocytes found in the vaginal smear. Only 2 patients in the high risk group of the parous women developed salpingitis within the first month.
In the high risk age group for salpingitis (16–25), the yearly incidence of pelvic inflammatory disease was 47/1000 women in the nulliparous group and 42/1000 women in the parous group. In the high risk age group for salpingitis (16–25) and in the whole material, there was no difference in frequency of salpingitis between the parous and the nulliparous groups.